A recording made in France by Erik Ludwig, F9LT (originally PA0LU) of 500 kHz ship-to-shore and ship-to-ship Morse Wireless Telegraphy made
His friend Edward "Ned" Raub relates further: He said he'd caught "everything from TA to VO1." or from Turkey TAH to Newfoundland, Canada with stations like St. Anthony Coast Guard Radio.
For my part (says Ned Raub), I recorded U.S coast stations, Faroes, Oslofjord, much else between dusk and 00 GMT here. I sent two micro-cassettes to Erik.
After many months, I received two standard cassettes back from Erik.
I held them for a while but decided they should be transcribed to
media that wouldn't slowly lose magnetism, i.e. CDs but finally it was decided to put these valuable recordings up on the Internet Archive.
A callsign list and correspondence between Erik Ludwig, F9LT and Ned Raub, W1RAN is included in a PDF file available here.